Jin, when I had my interview at UH on the 10th of March, the group problem solving worked like this: At some point during the interview, Meagan Polk, the financial aid advisor will give you several pages of handout that describes the scenario. You are given time to read the material by yourself and think about what items you will take with you in order of priority, which you will write on the paper from 1 to 10, with 1 being the most important and 10 the least.
Later during the day, depending on the schedule given to you, a pharmacy student ambassador will escort you to meet your group members at the 1st floor. Then the group (about 6 members) are escorted to the 2nd floor and into a room where usually Miss Tatum, several pharmacy students(usually in their 3rd or 4th year), and a pharm D are waiting. They will introduce themselves 1st and then your group members will individually introduce themselves. Then one student reads the instructions of the purpose of the group interview. In my case, my group members and I are trapped in a cave after a cave-in. The task is of course about what items should we bring in order of priority and then reach a consensus. Then the student announces that only the group will be doing all the talking. There is no time limit; what they are looking for is that you can hold yourself in the group and that you can express yourself clearly and reason out why you chose item A as opposed to item B. It's important to not be passive or be overbearing, but rather be assertive and acknowledge everyone's ideas. When everyone has agreed about what items to bring, then the group interview is over and your group is then escorted out of the room. Hope this helps.
~the greatest person who can help you is already standing beside you, yourself~Chuck Gallozzi